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defaultUnpack: Preserve timestamps when copying files

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Commit 6d928ab684327e0eeb1bf6cd889d57ca7127e8a7 changed this to not
preserve timestamps. However, that results in non-determinism; in
particular, it gives us a broken $SOURCE_DATE_EPOCH (especially for
everything using fetchFromGitHub). Builds affected by timestamps <
1980 should be fixed in some other way (e.g. changing the timestamp to
some fixed date > 1980).
This commit is contained in:
Eelco Dolstra 2016-01-26 16:21:43 +01:00
parent de26cac3cb
commit f4553d7219
1 changed files with 5 additions and 3 deletions
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8
pkgs/stdenv/generic/setup.sh
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@ -480,9 +480,11 @@ _defaultUnpack() {
if [ -d "$fn" ]; then if [ -d "$fn" ]; then
stripHash "$fn" stripHash "$fn"
# We can't preserve hardlinks because they may have been introduced by
# store optimization, which might break things in the build # We can't preserve hardlinks because they may have been
cp -pr --reflink=auto --no-preserve=timestamps "$fn" $strippedName # introduced by store optimization, which might break things
# in the build.
cp -pr --reflink=auto "$fn" $strippedName
else else